Drier.



No. 739,547. I PATENTBD 813F122, 190s.

- T: B. HOWE.

DRIER.

' APPLICATION FILED APR. 14, 1903.

F0 MODEL. 3 SHEETS-SHEET 1.-

, wean/10% I at I l i r a: nonms vrrsns 0a.. FHoTouvnu. wumuc'ron. a4 a.

PATBNTED SEPT. 22, 1903.

' B. HOWE.

I DRIER.

APPLICATION IILED'APB.J1&. 1903.

s sna u-sum 2.

KO MODEL.

NIT-ED STATES Iatented September 22, 196 3 PATENT OFFICE.

THOMAS E. HOWE, OF SCRANTON, PENNSYLVANIA, ASSIGNOR TO HOWE MANUFACTURING COMPANY, OFSCRANTON, PENNSYLVANIA, A CORPO- RATION OF PENNSYLVANIA.

DRlE R.

SPECIFICATION forming part of Letters Patent No. 739 547, dated September 22, 1903. Application filed April 14, 1903. Serial No. 152,564. (No model.)

To all whom it may concern:

Be it known that I, THOMAS E. Hows, of Scranton, in the county of Lackawanna, State of Pennsylvania, have invented certain new 5 and useful Improvements in Driers; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forminga partof this specification, and to re the letters of reference marked thereon.

This invention relates to improvements in driers, being especially designed for drying granular substances, as sand; and it has for its object to provide an apparatus through which the sand may be passed continuously and from which the moisture-laden air may be drawn off and one in which there will be no clogging or packing of the sand while passing through the apparatus.

To these ends the invention consists in certain novel details of construction and combinations and arrangements of parts, all as will be hereinafter described, and pointed out particularly in the appended claims.

In the drawings, Figure l is a side elevation of an apparatus embodying the present inventiou,aportion of the casing being broken away to show the interior construction. Fig. 2 is a horizontal section through two of the radiators and interposed air-chamber. Figs. 3 and 4 are detail views showing different forms of valve for regulating flow of material. Fig. 5 is a side elevation of a portion of one of the radiators.

Like letters of reference in the several figures indicate the same parts.

In the accompanying-drawings, illustrating a practical embodiment of the invention, the letter A indicates a drying receptacle or cham- 46 ber for receiving the material to be dried,

preferably rectangular in shape and constructed of any suitable or desired material; This receptacle is suitably supported upon legs or supports A. Within the receptacle 5 or chamber A are located a series of heaters or radiators B, extending transversely of the chamber and arranged parallel from end to end of the drying-chamber. These radiators are each made up of sections h, suitably sup ported upon the floor of the chamber and bolted together by through-bolts Z2, passing through lugs b at the top and bottom of the sections. The material to be dried passes between the parallel rows of radiators B, and to permit the radiators to be properly spaced apart to allow this each radiator-section pref erably consists of two triangular-shaped portions 71 On opposite sides of the central line of the section and communicatingwith the interior of these portions 5 are hollow 6o castings at the top and bottom of the sections, I on the opposite sides thereof, cast integral with the sections, forming a passage for the steam or other. heating medium through the radiators when the radiatorsections are bolted together, as will be readily understood. It is essential in devices of this character that the moisture-laden air or steam from the ma terial should be drawn 0E and allowed to escape. For this purpose there is interposedfio between the parallel rows of radiators B airchambers 0, consisting, preferably, of a piece of sheet metal bent as shown in the drawings, the sides of said air chambers abutting against the angular portions of the radiators, 75 thus leaving a space between the radiators and air-ch ambers through which the material passes; The side walls of the air-chambers are provided with apertures '0, preferably formed by slitting and bending the metal outward, as at a, forming an overhang over the aperture 0, which will prevent the en-' trance of sand into the air-chamber. The overhang portion 0' will loosen or break up the'column of sand in its descent through the apparatus, thus permitting a ready escape for the moisture and a thorough dryingof the sand. Steam as the drying medium is supplied from any suitable source through pipe D and branch pipes (1, leading from said pipe 0 to the bottom of the radiators, the steam being exhausted, if desired, after passing through the radiators through pipe E, communicating with the radiators at the top through branch pipes c.

For carrying 0d the vapor and moisture, ladened air from the drying-chambers airmain F is provided, communicating with said chamber by branch pipes f, a draft being preferably, created through the air-main F by means of a steam jet or nozzle G.

In order to regulate the flow of material through the drying-chamber, suitable valves, dampers, or other feed-regulators may be provided, bridging the space between the parallel rows of radiators.

lhe preferred form of valve consists of a cylinder or tube H, having cut-away portions h extending longitudinally of the tube on opposite sides thereof, said tube closed at each end and provided at one end with a hub or shaft h, squared at the end for the reception of a suitable handle whereby the tube may be turned to cut off or permit the feed of the material, as will be readily understood.

The modification of the valve consists simply of a stationary plate 71, and a movable plate h operated by means of handles K, said plates being provided with openings.

The sand or other material to be dried is supplied to the drying-chamber and after 2. In a-drying apparatus, the combination with the radiators located therein, formed of sections having spacing extensions on each side, air-chambers located between the rows of radiators and abutting against the extensions whereby spaces between the chambers sage of the material through the chamber,

and valves for regulating the flow of the material; substantially as described.

4. In a drying apparatus, the combination with the radiators located therein, formed of sections having integral spacing projections, of air-chambers formed of sheet metal located between the rows of radiators, having entrance-apertures, and overhanging portions above said apertures, said overhang portions'constituting means for breaking up the column of material being dried; as and for the purpose set forth.

' THOMAS B. HOWE. Witnesses:

H. L. DRIESEN,

A. G. THOMASON. 

